Origin: Leonard mine, Silver Bow Co., Montana, USA
Sample size: top 6 x 6 x 2 cm, 2nd row 6 x 5 x 4 cm, , 3rd row 6 x 5 x 3 cm,
4th row 7 x 5 x 4 cm,
5th row 4 x 3 x 3 cm, bottom 6 x 5 x 5 cm, crystals to 9 mm
Covellite with partial replacement by
chalcopyrite
Origin: Summitville, Colorado, USA
Sample size: top 3.5 x 2 x 2 cm, bottom 5 x 4 x 3 cm
Origin: Leonard mine, Butte, Silver Bow Co., Montana, U.S.A.
Sample size: 9 x 4 x 3 cm with iridescent or
chalcopyrite coating and embedded crystals to 3 cm
Origin: Butte, Montana, U.S.A.
Sample size: 5 x 3 x 2 cm, nice miniature with hexagonal platy crystals to 7
mm
Specimen of indigo blue, platy covellite in indistinct crystal forms with
native
silver plates.
Origin: Mina San Martin, Sombrerete, Zacatecas, Mexico
Sample size: 5 x 4 x 3 cm
Origin: Kolussa mine, Silver Bow Co., Montana, United States
Ex. Kidwell collection
Sample size: 6 x 4 x 2 cm
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